Rank	Countries/Territories	Count	Percent
1	United States	555	38.7%
2	China	485	33.8%
3	Germany	90	6.3%
4	Czech Republic	47	3.3%
5	Canada	47	3.3%
6	France	28	2%
7	United Kingdom	28	2%
8	Russia	22	1.5%
9	Japan	19	1.3%
10	Netherlands	14	1%
11	Singapore	11	0.8%
12	India	11	0.8%
13	Hong Kong	9	0.6%
14	Ireland	9	0.6%
15	Taiwan	7	0.5%
16	Australia	7	0.5%
17	Switzerland	5	0.3%
18	Mongolia	4	0.3%
19	Norway	4	0.3%
20	Ukraine	4	0.3%
21	Cyprus	4	0.3%
22	Indonesia	3	0.2%
23	Latvia	3	0.2%
24	Sweden	3	0.2%
25	Portugal	2	0.1%
26	Turkey	2	0.1%
27	Lithuania	2	0.1%
28	Bangladesh	2	0.1%
29	Brazil	2	0.1%
30		2	0.1%
31	Argentina	1	0.1%
32	Colombia	1	0.1%
33	Iran, Islamic Republic of	1	0.1%
34	Poland	1	0.1%